US1994311A - Irradiating device - Google Patents

Description

March 12, 1935.

0. FRITZE IRRADIATING DEVICE Filed May 3, 1935 INVENTOR I ATTORNEY Patented Mar. 12, 1935 UNITED STATES PATENT OFFICE Application May 3,

In German Electric Company, a corporation'oi New York 1933, Serial No. 669,248 y June I, 1932 4 Claims. (cilia-1'11) The present invention relates to irradiating devices generally and more particularly the invention relates to improvements in such devices.

.Sources oi. infra-redv radiation are now avail- 5 able on the market; such sources comprise a filament wound around a supporting body of heat insulating material and a reflector for the infrared and visible light radiations emitted bythe filament when heated to a proper temperature.

The object of the present invention is to incorporate a source of different radiations in such devices. Another object oi the invention is to provide an irradiating device wherein a single reflector directs and evenly distributes. infrared and ultra-violet radiations. A further object or the invention is to provide an irradiating device emitting a' beam 01' light rich in visible, infra-red and ultra-violet light radiations in which all of said radiations are commingled. Still further objects and advantages attaching to the device and to its use and operation will be apparent to those skilled in the art from the following particular description and from the appended claims. as In accordance with these objects the invention comprises a hollow, conically shaped, supporting body oi! heat insulating material having a filament mounted on the external wall thereof and a gaseous electric discharge lamp device 80 mounted in the interior thereof. Said filament is adapted to emit infra-red radiations and said lamp device is adapted'to emit ultra-violet radiations when a suitable current flows through said filament and said lamp device. The walls I of said insulating body have a plurality of windows therein to permit the passage of the light radiations emitted by the discharge device. Said lamp device and said filament are mounted in or about the focal point of a reflector. The refiector collects the light radiations from said filament and said lamp device and sends out said radiations in a beam in which the visible, infrared and ultra-violet radiations are evenly distributed and commingled. In the drawing accompanying and forming epart of this specification an embodiment oi! the invention is shown in Fig. 1 in a side elevational partly sectional view and an element of the embodiment illustrated in Fig. 1 is shown in a side elevational view in Fig. 2 but as such illustration is primarily for purposes of disclosure it will be understood of course that numerous substitutions, modifications and changes in the form and details i the device and in its use and operation 66 may be made by those skilled in the art without departing from the spirit and scope of the invention. 1

Referring to the drawing the new and novel irradiating device comprises a parabolic reflector 1 having a socket 2. A conical shaped hollow body 4 of heat insulating material having a base 3 is screwed into said socket 2. A coiled filament 5, adapted to/ emit infra-red radiations when heated to a proper temperature by the passage of a suitable electric current therethrough, is

mounted on the outer wall of said body 4. Said filament consists of Nichrome' wire, forexample, obtainable under that name on the open market and consisting of an alloy of nickel and chromium. An electric discharge lamp device 6 is mounted in the interior of said body 4. Said lamp device 6 has a bent tubular container made of a material pervious to ultra-violet light, such as quartz, electrodes sealed therein at each end thereof and a gaseous filling therein, such as a filling comprising mercury vapor, which emits ultra-violet and visible light rays when excited by the passage of an electric discharge between said electrodes. The sloping walls of said body 4 have a plurality of windows 7 therein and said lamp device 6 and said filament 5 are located in and. about the focal point of said parabolic refiector l. The light emitted by said lamp device 6 as well as said filament 5 falls on the surface of said reflector 1 and is directed thereby in a beam of parallel rays in which infra-red, ultra-violet and visible light radiations are evenly distributed and commingled. The new and novel irradiating device is useful for many purposes and particularly for therapeutic purposes. A convex metal disk 8 having windows 9 therein is mounted on the exterior end of said body 4 to permit the passage of the light radiations emitted by said ultra-violet generator 6 in the same direction in which the radiations are directed by said refiector 1. The filament 5 is, when desired, connected in series with the lamp 6 to act as a ballast resistance therefor. The coiled filament 5 is not wound around the body 4, in which case it would obstruct the passage of the light emitted by said lamp 6 through the windows 7, but is led back and forth over' the outer wall of said body 4 located between the windows 7. The filament 5 is thus physically separated into panels with a window '7 between each panel, butthe panels are electrically connected in series. -The openings '7 and 9 also serve as ventilators iorthe lamp device 6 which is desirable to prevent the temperature of the lamp 6 from going above the operating temperature thereof. A current supply lead connected to a suitable source of current is led, through the tube 10in the rear' of said socket '2 and is connected to contacts in said socket 12. It will be understood, of course, that said reflector 1 is mounted on a support which is adjustable as to height and direction, )or not as desired. r I

What I claim as new and desire to secure by Letters Patent of the United States, is:-

1. An irradiating device comprising in combination, a reflector havinga socket therein and a hollow, supporting insulating body adapted to screw into said socket, an'infra-red ray emitting metal filament mounted on the external wall of said body, an electric discharge ultra-violet generator mounted in the interior of said body, the side walls of said body being perforated, the light rays and the heat from said generator passing through the perforatedwalls of said insulating body, said reflector collecting and projecting the light rays emitted by said filament and said generator in a beam in which said rays are evenly distributed and commingled said filament being mounted between the perforations of said supporting body.

2. an irradiating device comprising in combirays in which said rays are evenly distributed and commingled, said filament being mounted between the perforations of said supporting body.

3. An irradiating device comprising in combination, a reflector having a socket therein and a conically shaped, hollow body of insulating material adapted to screw into said socket, the walls of said body being perforated, an infra-red ray emitting metal filament mounted on the external wall of said body and between said perforations, a gaseous electric discharge ultra-violet generator mounted in the interior of said body, said generator comprising abontainer, electrodes sealed therein and a gaseous atmosphere therein, the light rays and the heat from said generator passing through the perforated walls of said body, said reflector collecting and projecting the light rays emitted by said filament and said generator in a beam of parallel rays in which said rays are evenly distributed and commingled.

4. An irradiating device comprising in combination, a reflector having-a socket therein and a conically shaped, hollow body of insulating material adapted to screw into said socket, the walls of said body being perforated,a perforated cap at one end of said body, an infra-red ray emitting metal filament mounted on the external wall of said body and between said perforations, a gaseous electric discharge ultra-violet generator mounted in the interior of said body, said generator comprising a container, electrodes sealed therein and a gaseous atmosphere therein, the light rays and .the heat from said generator passing through the perforated walls of said body, said reflector collecting and projecting the light rays emitted by said filament and said generator in a beam of parallel rays in which said rays are evenly distributed and commingled.

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